Duplex tracker-bar for pneumatic musical instruments.



Patented Apr. 13. 1909. 2 sHEBTssH1:m 2.

0 0 O O O O O O O (fo o o o 0 2,3

O O O 0 O J. WIESBR. DUPLEX TRACKER BAR r03 PNEUMATIC MUHIGAL INSTRUMENTS.

APPLIUATIDK FILED JLH. 20,1909.

F 1L9. i

33 AL attain mgs and is wit ing the piano, so that the instrument ma ta .in 11 which is adapted to be close y e-.'

a 'tune sheets on oneand the samefpiano or pianoplayer I provide. enttaclreljbar therefrom. For this purpose aperforat'ed away; Fig. 5a front view of the slide; Fig.6

UNITED sra'ra s PATENT OFFICE.

DUPLEX 'rnaoxnmnmroa PNEUMATIC uusrcu. msrnumm'rs.

Specification 9! pettera Patent. Application filed mung-to, 1909. v Berta! No. 47am.

Patented April 13, 1909.

To all whom it may concern:

Be it known that I, JOSEPH zen of the United States, .rcsidin J ohnsville, Montgomery, county, gt

Wrasse, a citia .a ate f of New York, have mventednew and usefulh Improvements, in Duplex Tracker-Bars for Pneumatic Musical Instruments, of which thefollowin is aspecification, The stan ard tune sheets adapted to co'- operate with the t acker bars of pneumatic musical instrumen s are of different compass t and are generallypro'vidcd with ieitherfifg or 88 longitudinal rows ofperforatiqns, sqjasgt j actuate either 65 or 88 piano hammers. gflhe" fi bath l ita ecsheete Qty-ever, occupy th samggwiqihi tune sheets ada ted toggling-@6514 the perforations arecomparativ than in those adapted. LOQa tuate-BS mers'.

In order to permit the n seof both kinds of;

as two parallel rows of air 0 ening -woqemw containing 65 openings w etheothepgow contains'88 openings. 'lhe'o ningsbfleither one row are adapted to ,be; coup edIte-tlle music reducing means;

suc that when one row, communicates with said means, the other row is cut off slide is emplo ed which oontrols. 'the openhin reach of the person opera;-

e readily adapted to the use of, tune sheets aving a different compass. n the accompanying drawings: Figure 1 is a. front view of partof a iano case r0 vided with my improved du eh tracker ar; Fig. 2 a vertical section on me 2- 2,Fig. 1'; Fig.3 a side view of the slide operatin means; Fig. 4- a frontfview of the channe block, with the slide and cover partly broken a plan, partly in-section, of the channel block and cooperating parts; Fig. 7 an enlarged vert'ical cross section on l ne 7--' 7f,' F 6; Fig. 8 a horizontal section on line 84-8, 3g. 7' and Fi 9a vertical section on line 9-9, 1 .7, wit the air tubes omitted; 1

- he numeral .10 indicates the upper front board of a piano case having an ob o 0' ensli' door 12., Back ofopemng, 11 there the connection .bc-

is mounted in the piano case a. box, 18

taining a fixed duplex tracker bar 14 and adapted to receive a perforated music sheet A. This sheet passes from a delivery ro ler acrosstiacker bar 14, to a receiving roller 16 to which rotary motion is imparted-b a grumble-{motor} (not shown). raeker liar :14 hasan ripper, row of openings 17 and a lower-.-row o openings 18, both rows, being of the same length, but row 17 comprising a larger number ofopenings than row 18. Back n1 tracker bar 14 there is secured to bog 13", 'a channel-block 19 provided with a issues of lparallel U-shaped ducts or 9114111- nels' 20, t 6 number ofwhichmorr'esponds to the number of openingsin row 17. If this ferred-mimber, block '19 has an equal numbeiofducts 20. The front boardZl ofblock -recTeption of the members 24, 25 of a slide B. e reduced board-'section'or partition 26, intermediate upper groove 22 and the upper'legsof ducts 20; is provided with a series of perforations, each perforation opening into one of said ducts 20. It is preferred to arrange perforations 2 7 in oblique rpws, each eontmnm three of said perfora- ;t1ons.' The reduced card-section 29, intermediate lower groove2-3 and the lower legs of ducts 2011s provided with aseries of shin-- .larly arranged perforations 30, each perfora tion communicating with one of said ducts 201 The perforationsfl, aoiare so arranged "and spaced that the lower perforations of the so that when a-v'ertical line is drawn through an perforation of ,theupper slide-member Ffg. 5), said line-will. ass throu' h a 5,911 imperforate portion of; &g}qwer tie-memin number and ar- .100

i'owcontams88 openings, which is the pre- IQ PIOYidGd with a pair o'f'parallel' lon ifudnli'lel grooves 22, 23 adapted, respective or t e iii i 'vided with aknob or ward into the position, shown in Slide-members 24, 25 are confined within their respective grooves by a cover 33, which is secured ,to front board 21 by screws 34, or otherwise. Cover 33 is provided with on u per set of perforations 35 and: a lower set of perforations 3'6. Perforations "35 a e equal in number to perforations 27-and are axially alined with such perforations. In like manner, pcrforations'36 equal in numher and arrangement those of perforations 30, with which they are alined.- 'Ifdesired, perforated linings or gaskets. 37 may be .interposed between partitions 26, 29 and slide.- members 24, 25, respectively, and also between said members andcover33. Pe'rforations 35 communicate by tubes '38 with upper openings 17 of trackerbar 14,, while perforations 36 communicate by tubes 39" with. the lower openings 18 of said tracker bar. A- -airof dive shields '40 "ex tending li om the'trac er' bar-towardthe back 41 of box 13, conceal these tubes from view, im 'art'a neat appearance to the'int'erior of tlie box and; guard the tubestgainst injury.

Each of the U-shap'ed channels; 20 is by'a'." tube 42 connected tothe bellows that "acme ate the tune roducingmeans inot shown); I

Slide-memiEers 24, 25 are connected'at one end bya cross bar 43' to which is fulcn rned-a. vlink 44 ivoted to the .rear arm ififof'ashaft 46 which is journaled ifi bearin 110i box 13. 'The front orank48j of shat "4( is pro-*- button 49 that constii If arm ,48 is noo ved down .Fig; "1) Slide B, is through arm 45 52nd link'44, shifted toward the right, so that perforations 31;"will, register with perforations 27, '35 or partition 26 and cover 33. In this position 0 slide B, the perforations 32 of lower slide-member 25 are out of alinement with -:perforations 30 and 36 of partition 29 and cover 33,80 that perforations 30 are closed against the atmos tutes a handle,

pheric ln-this way tracker bar'open-J ngs 17 willcommunicate. through tubes'j38.

-perforations 35, 31, 27;; channels ,29 an tubes 42,with the tune while the'openings 18 of t out of commun cation 1, with such means;

When a tune sheet having a compass .of 88 producing means,

notes is fed acrossthe tracker liar, the corresponding music means thro h tubes-39 rforations zo and wi s-42, w

[member 25-register will be produced. If-itfis desired to set the tracker bar for a tune sheet having a range of 65 was only, knob'iilis 's u ward until it coversa fixed index 50. nt position, perforations 32 of slidew1th perforations'BO and and cover 38, so that com-L between tracker 36 bf partition 29 x munication is' established -bar openings 18' and the time proggcg g.

J 1 30, channels e .the openings 17' of the tracker bar are closed against communication with channel: 20

disconnecting 'from -saidphannels.

,ar'allel Y ox; -'sl id e "adapted i'to' connect .either'fone row-with"said channels. -3-. Kduplex tracker bar. provided with two 'oxgha slide adapted", to xconnect s finns her; n. ih

for connecting the 'perand lower track .trackrbar are to estab'hsh perforation and the v y the upper and 'lower'co'ver -'perforations,

'upper a do, and

Thedevice is thusset ready for use in connection with If desired, index 50 may be providcd with the number 88, as shown -I ig. 1. 'VVhen this number is ex osed, it indicates that the, tracker bar is set or use in conjunction with tune sheetshaving a range of 88 notes,'while when the number is concealed by knob 49, the tracker bar is set for tune sheets having a compass of 65 notes;

It will befs'een that by my invention, tune sheets preparedfor difi'erent ranges of piano hammers may be used in-one and the same instrument" having" but-a single tracker bar. In this way all standard gtunie sheets obtainablein the: market may be utilized for operating an instrurnent, without in any way chimfi ng'the construction of the latter.

arm

I '1; Ajdu pleiiltrnclteribar provided with two ar'allel' rows 10f openings,

X having air channels, means -for.-connectiingith'eperforation's of either one row with and channels, and-means for simultaneously the: openings j of the other, row

r a e ha meai -charme s,

- ker provided with two combined with a and aperforated t s ll of 'aralleljrows 'offo'penin lcombined' with' a i channe andfa: perforated the. openings "of eitherflone-rowjwith said'bhannels and siimultaneouslixiiisconnect the openings'of the' otherrowifro'msaid.channels. l- I .4. Aduplextrackenbar provided with an and-{a lower opening; l comthe air channel," and e f Brand-lower lidejperfpratio s;

haro 5. {A duplextrackr bar providegl withaii upper o t end ,a-lower'opemng, com- 'bined within; 2 having an air channel; a cover having anmpper' perforation a lower perforation, a'perforated slide adapted 1 communication between e1ther. I air channel, and means or connecting l and lower trackerharo a 6. A; pleat tracker-Thar provided with" an' and 'ai "loweropening, com with-a groovedibox having w the p rbmed pove; a perforated cover means perforations with s gn: th for connecting e cover he tracker baropenings.

with the up 5 a tune sheet having a compass .ofbut 65no i vcombined with a t H 'ox haf snail-channel, ai slide having-an upper. f i orationfand alower j o fio ib ngd p 7. A duplex tracker bar provided with two rows of openings having different ranges, combined with a box havin a series of air channels, a first perforate slide-member interposed between said channels and one of said rows, a second perforated slide-member interposed between said channels and the other row, the perforations of the first slid'emember being arranged in a staggering relation to those of the second slide-member, and means for simultaneously actuating both slide-members.

8. A duplex tracker bar provided with two parallel rows of openings, combined with a ox having air channels, a perforated slide adapted to connect the openings of either one row with the air channels, and means for operating the slide.

9. A duplex tracker bar provided with two parallel rows of openings, combined with a box having air channels, a perforated slide adapted to connect the openings of either one row with the air channels, an arm connected to the slide, and means for operating said arm.

10. A duplex tracker bar provided with two parallel rows of openings, combined with a box having air channels, a perforated slide adapted to connect the openings of either one row with the air channels, an arm linked to the slide, a button connected to the arm, and an index adapted to be covered by the button.

Signed by me at St. J ohnsville, New York, this 16th day of January, 1909.

JOSEPH WIESER.

\Vitnesses:

W. L. ENGELHARDT, E. D. CARNEY. 

